Pressure regulating valve with optimized deaeration

Details Pressure regulating valve with optimized deaeration Pressure regulating valve with optimized deaeration

1999-03-16

2000-07-25

Huson, Gregory L.

Valves and valve actuation

Electrically actuated valve

Balanced valve

137102, 13763022, F16K 3102

Patent

active

060927836

ABSTRACT:
An electropneumatic pressure regulating valve has an electromagnet fastened, as an actuating drive, to a valve housing. At least one work connection and a deaeration connection in the valve housing are guided, respectively, to a work chamber and deaeration chamber arranged inside the valve housing. The work chamber and the deaeration chamber are separated from one another by a valve seat corresponding to a valve tappet as closing element. The valve tappet proceeds from the electromagnet and is movable longitudinally through the work chamber via a movable magnet armature of the electromagnet. To improve the deaeration behavior and to achieve a more precise control capability during deaeration, the valve tappet has a through-hole which is directed longitudinally proceeding from its lower disk face and which opens into a pressure-tight coil interior space within the electromagnet. The coil interior space is sealed against the work chamber by a seal which enables the longitudinal movability of the valve tappet.

REFERENCES:
patent: 3873063 (1975-03-01), Illing
patent: 4979537 (1990-12-01), Offenwanger
patent: 5067524 (1991-11-01), Pickenhahn
patent: 5918856 (1999-07-01), Scharnowski et al.
"Know-how in Pneumatik" by Mannesmann Rexroth Pneumatik GmbH, Nov. 1993.

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